97539967 has 4 divisors (see below), whose sum is σ = 111474256. Its totient is φ = 83605680.

The previous prime is 97539961. The next prime is 97539973. The reversal of 97539967 is 76993579.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (97539961) and next prime (97539973).

It is a cyclic number.

It is not a de Polignac number, because 97539967 - 2⁷ = 97539839 is a prime.

It is a super-2 number, since 2×97539967² = 19028090324722178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97539961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6967134 + ... + 6967147.

It is an arithmetic number, because the mean of its divisors is an integer number (27868564).

Almost surely, 2^97539967 is an apocalyptic number.

97539967 is a deficient number, since it is larger than the sum of its proper divisors (13934289).

97539967 is a wasteful number, since it uses less digits than its factorization.

97539967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13934288.

The product of its digits is 3214890, while the sum is 55.

The square root of 97539967 is about 9876.2324294237. The cubic root of 97539967 is about 460.3210849009.

The spelling of 97539967 in words is "ninety-seven million, five hundred thirty-nine thousand, nine hundred sixty-seven".